457737b6cc
Currently <vm-dir>/<vm-name>.conf file is used only for debugging purposes - the real one is passed directly to libvirt, without storing on disk for it. In some cases (e.g. qvm-clone) QubesVM.create_config_file() can be called before VM directory exists and in this case it would fail. Because it isn't critical fail in any means (the config file will be recreated on next occasion) just ignore this error. Final version most likely will have this part of code removed completely.
1902 lines
70 KiB
Python
1902 lines
70 KiB
Python
#!/usr/bin/python2
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# -*- coding: utf-8 -*-
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#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2010 Joanna Rutkowska <joanna@invisiblethingslab.com>
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# Copyright (C) 2013 Marek Marczykowski <marmarek@invisiblethingslab.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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#
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import datetime
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import fcntl
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import lxml.etree
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import os
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import os.path
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import re
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import shutil
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import subprocess
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import sys
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import time
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import uuid
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import xml.parsers.expat
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from qubes import qmemman
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from qubes import qmemman_algo
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import libvirt
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import warnings
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from qubes.qdb import QubesDB
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from qubes.qubes import dry_run,vmm
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from qubes.qubes import register_qubes_vm_class
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from qubes.qubes import QubesVmCollection,QubesException,QubesHost,QubesVmLabels
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from qubes.qubes import defaults,system_path,vm_files,qubes_max_qid
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from qubes.qmemman_client import QMemmanClient
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import qubes.qubesutils
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xid_to_name_cache = {}
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class QubesVm(object):
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"""
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A representation of one Qubes VM
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Only persistent information are stored here, while all the runtime
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information, e.g. Xen dom id, etc, are to be retrieved via Xen API
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Note that qid is not the same as Xen's domid!
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"""
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# In which order load this VM type from qubes.xml
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load_order = 100
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# hooks for plugins (modules) which want to influence existing classes,
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# without introducing new ones
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hooks_clone_disk_files = []
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hooks_create_on_disk = []
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hooks_create_xenstore_entries = []
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hooks_get_attrs_config = []
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hooks_get_clone_attrs = []
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hooks_get_config_params = []
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hooks_init = []
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hooks_label_setter = []
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hooks_netvm_setter = []
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hooks_post_rename = []
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hooks_pre_rename = []
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hooks_remove_from_disk = []
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hooks_start = []
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hooks_verify_files = []
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hooks_set_attr = []
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def get_attrs_config(self):
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""" Object attributes for serialization/deserialization
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inner dict keys:
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- order: initialization order (to keep dependency intact)
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attrs without order will be evaluated at the end
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- default: default value used when attr not given to object constructor
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- attr: set value to this attribute instead of parameter name
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- eval: (DEPRECATED) assign result of this expression instead of
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value directly; local variable 'value' contains
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attribute value (or default if it was not given)
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- func: callable used to parse the value retrieved from XML
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- save: use evaluation result as value for XML serialization; only attrs with 'save' key will be saved in XML
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- save_skip: if present and evaluates to true, attr will be omitted in XML
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- save_attr: save to this XML attribute instead of parameter name
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"""
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attrs = {
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# __qid cannot be accessed by setattr, so must be set manually in __init__
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"qid": { "attr": "_qid", "order": 0 },
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"name": { "order": 1 },
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"uuid": { "order": 0, "eval": 'uuid.UUID(value) if value else None' },
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"dir_path": { "default": None, "order": 2 },
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"conf_file": {
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"func": lambda value: self.absolute_path(value, self.name +
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".conf"),
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"order": 3 },
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### order >= 10: have base attrs set
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"root_img": {
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"func": self._absolute_path_gen(vm_files["root_img"]),
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"order": 10 },
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"private_img": {
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"func": self._absolute_path_gen(vm_files["private_img"]),
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"order": 10 },
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"volatile_img": {
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"func": self._absolute_path_gen(vm_files["volatile_img"]),
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"order": 10 },
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"firewall_conf": {
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"func": self._absolute_path_gen(vm_files["firewall_conf"]),
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"order": 10 },
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"installed_by_rpm": { "default": False, 'order': 10 },
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"template": { "default": None, "attr": '_template', 'order': 10 },
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### order >= 20: have template set
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"uses_default_netvm": { "default": True, 'order': 20 },
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"netvm": { "default": None, "attr": "_netvm", 'order': 20 },
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"label": { "attr": "_label", "default": defaults["appvm_label"], 'order': 20,
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'xml_deserialize': lambda _x: QubesVmLabels[_x] },
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"memory": { "default": defaults["memory"], 'order': 20 },
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"maxmem": { "default": None, 'order': 25 },
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"pcidevs": {
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"default": '[]',
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"order": 25,
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"func": lambda value: [] if value in ["none", None] else
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eval(value) if value.find("[") >= 0 else
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eval("[" + value + "]") },
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# Internal VM (not shown in qubes-manager, doesn't create appmenus entries
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"internal": { "default": False, 'attr': '_internal' },
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"vcpus": { "default": None },
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"uses_default_kernel": { "default": True, 'order': 30 },
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"uses_default_kernelopts": { "default": True, 'order': 30 },
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"kernel": {
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"attr": "_kernel",
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"default": None,
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"order": 31,
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"func": lambda value: self._collection.get_default_kernel() if
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self.uses_default_kernel else value },
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"kernelopts": {
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"default": "",
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"order": 31,
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"func": lambda value: value if not self.uses_default_kernelopts\
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else defaults["kernelopts_pcidevs"] if len(self.pcidevs)>0 \
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else defaults["kernelopts"] },
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"mac": { "attr": "_mac", "default": None },
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"include_in_backups": { "default": True },
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"services": {
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"default": {},
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"func": lambda value: eval(str(value)) },
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"debug": { "default": False },
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"default_user": { "default": "user", "attr": "_default_user" },
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"qrexec_timeout": { "default": 60 },
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"autostart": { "default": False, "attr": "_autostart" },
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"backup_content" : { 'default': False },
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"backup_size" : {
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"default": 0,
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"func": int },
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"backup_path" : { 'default': "" },
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"backup_timestamp": {
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"func": lambda value:
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datetime.datetime.fromtimestamp(int(value)) if value
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else None },
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##### Internal attributes - will be overriden in __init__ regardless of args
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"config_file_template": {
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"func": lambda x: system_path["config_template_pv"] },
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"icon_path": {
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"func": lambda x: os.path.join(self.dir_path, "icon.png") if
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self.dir_path is not None else None },
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# used to suppress side effects of clone_attrs
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"_do_not_reset_firewall": { "func": lambda x: False },
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"kernels_dir": {
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# for backward compatibility (or another rare case): kernel=None -> kernel in VM dir
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"func": lambda x: \
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os.path.join(system_path["qubes_kernels_base_dir"],
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self.kernel) if self.kernel is not None \
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else os.path.join(self.dir_path,
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vm_files["kernels_subdir"]) },
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"_start_guid_first": { "func": lambda x: False },
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}
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### Mark attrs for XML inclusion
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# Simple string attrs
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for prop in ['qid', 'uuid', 'name', 'dir_path', 'memory', 'maxmem',
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'pcidevs', 'vcpus', 'internal',\
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'uses_default_kernel', 'kernel', 'uses_default_kernelopts',\
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'kernelopts', 'services', 'installed_by_rpm',\
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'uses_default_netvm', 'include_in_backups', 'debug',\
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'qrexec_timeout', 'autostart',
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'backup_content', 'backup_size', 'backup_path' ]:
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attrs[prop]['save'] = lambda prop=prop: str(getattr(self, prop))
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# Simple paths
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for prop in ['conf_file', 'root_img', 'volatile_img', 'private_img']:
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attrs[prop]['save'] = \
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lambda prop=prop: self.relative_path(getattr(self, prop))
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attrs[prop]['save_skip'] = \
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lambda prop=prop: getattr(self, prop) is None
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# Can happen only if VM created in offline mode
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attrs['maxmem']['save_skip'] = lambda: self.maxmem is None
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attrs['vcpus']['save_skip'] = lambda: self.vcpus is None
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attrs['uuid']['save_skip'] = lambda: self.uuid is None
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attrs['mac']['save'] = lambda: str(self._mac)
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attrs['mac']['save_skip'] = lambda: self._mac is None
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attrs['default_user']['save'] = lambda: str(self._default_user)
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attrs['backup_timestamp']['save'] = \
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lambda: self.backup_timestamp.strftime("%s")
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attrs['backup_timestamp']['save_skip'] = \
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lambda: self.backup_timestamp is None
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attrs['netvm']['save'] = \
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lambda: str(self.netvm.qid) if self.netvm is not None else "none"
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attrs['netvm']['save_attr'] = "netvm_qid"
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attrs['template']['save'] = \
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lambda: str(self.template.qid) if self.template else "none"
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attrs['template']['save_attr'] = "template_qid"
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attrs['label']['save'] = lambda: self.label.name
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# fire hooks
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for hook in self.hooks_get_attrs_config:
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attrs = hook(self, attrs)
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return attrs
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def post_set_attr(self, attr, newvalue, oldvalue):
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for hook in self.hooks_set_attr:
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hook(self, attr, newvalue, oldvalue)
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def __basic_parse_xml_attr(self, value):
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if value is None:
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return None
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if value.lower() == "none":
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return None
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if value.lower() == "true":
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return True
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if value.lower() == "false":
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return False
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if value.isdigit():
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return int(value)
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return value
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def __init__(self, **kwargs):
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self._collection = None
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if 'collection' in kwargs:
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self._collection = kwargs['collection']
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else:
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raise ValueError("No collection given to QubesVM constructor")
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# Special case for template b/c it is given in "template_qid" property
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if "xml_element" in kwargs and kwargs["xml_element"].get("template_qid"):
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template_qid = kwargs["xml_element"].get("template_qid")
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if template_qid.lower() != "none":
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if int(template_qid) in self._collection:
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kwargs["template"] = self._collection[int(template_qid)]
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else:
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raise ValueError("Unknown template with QID %s" % template_qid)
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attrs = self.get_attrs_config()
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for attr_name in sorted(attrs, key=lambda _x: attrs[_x]['order'] if 'order' in attrs[_x] else 1000):
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attr_config = attrs[attr_name]
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attr = attr_name
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if 'attr' in attr_config:
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attr = attr_config['attr']
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value = None
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if attr_name in kwargs:
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value = kwargs[attr_name]
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elif 'xml_element' in kwargs and kwargs['xml_element'].get(attr_name) is not None:
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if 'xml_deserialize' in attr_config and callable(attr_config['xml_deserialize']):
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value = attr_config['xml_deserialize'](kwargs['xml_element'].get(attr_name))
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else:
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value = self.__basic_parse_xml_attr(kwargs['xml_element'].get(attr_name))
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else:
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if 'default' in attr_config:
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value = attr_config['default']
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if 'func' in attr_config:
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setattr(self, attr, attr_config['func'](value))
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elif 'eval' in attr_config:
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setattr(self, attr, eval(attr_config['eval']))
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else:
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#print "setting %s to %s" % (attr, value)
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setattr(self, attr, value)
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#Init private attrs
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self.__qid = self._qid
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self._libvirt_domain = None
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self._qdb_connection = None
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assert self.__qid < qubes_max_qid, "VM id out of bounds!"
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assert self.name is not None
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if not self.verify_name(self.name):
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msg = ("'%s' is invalid VM name (invalid characters, over 31 chars long, "
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"or one of 'none', 'true', 'false')") % self.name
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if 'xml_element' in kwargs:
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print >>sys.stderr, "WARNING: %s" % msg
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else:
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raise QubesException(msg)
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if self.netvm is not None:
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self.netvm.connected_vms[self.qid] = self
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# Not in generic way to not create QubesHost() to frequently
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if self.maxmem is None and not vmm.offline_mode:
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qubes_host = QubesHost()
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total_mem_mb = qubes_host.memory_total/1024
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self.maxmem = total_mem_mb/2
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# Linux specific cap: max memory can't scale beyond 10.79*init_mem
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if self.maxmem > self.memory * 10:
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self.maxmem = self.memory * 10
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# By default allow use all VCPUs
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if self.vcpus is None and not vmm.offline_mode:
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qubes_host = QubesHost()
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self.vcpus = qubes_host.no_cpus
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# Always set if meminfo-writer should be active or not
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if 'meminfo-writer' not in self.services:
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self.services['meminfo-writer'] = not (len(self.pcidevs) > 0)
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# Additionally force meminfo-writer disabled when VM have PCI devices
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if len(self.pcidevs) > 0:
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self.services['meminfo-writer'] = False
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# Some additional checks for template based VM
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if self.template is not None:
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if not self.template.is_template():
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print >> sys.stderr, "ERROR: template_qid={0} doesn't point to a valid TemplateVM".\
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format(self.template.qid)
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return False
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self.template.appvms[self.qid] = self
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else:
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assert self.root_img is not None, "Missing root_img for standalone VM!"
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# fire hooks
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for hook in self.hooks_init:
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hook(self)
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def __repr__(self):
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return '<{} at {:#0x} qid={!r} name={!r}>'.format(
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self.__class__.__name__,
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id(self),
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self.qid,
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self.name)
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def absolute_path(self, arg, default):
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if arg is not None and os.path.isabs(arg):
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return arg
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else:
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return os.path.join(self.dir_path, (arg if arg is not None else default))
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def _absolute_path_gen(self, default):
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return lambda value: self.absolute_path(value, default)
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def relative_path(self, arg):
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return arg.replace(self.dir_path + '/', '')
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@property
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def qid(self):
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return self.__qid
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@property
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def label(self):
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return self._label
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@label.setter
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def label(self, new_label):
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self._label = new_label
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if self.icon_path:
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try:
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os.remove(self.icon_path)
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except:
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pass
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os.symlink (new_label.icon_path, self.icon_path)
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subprocess.call(['sudo', 'xdg-icon-resource', 'forceupdate'])
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# fire hooks
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for hook in self.hooks_label_setter:
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hook(self, new_label)
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@property
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def netvm(self):
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return self._netvm
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# Don't know how properly call setter from base class, so workaround it...
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@netvm.setter
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def netvm(self, new_netvm):
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self._set_netvm(new_netvm)
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# fire hooks
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for hook in self.hooks_netvm_setter:
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hook(self, new_netvm)
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def _set_netvm(self, new_netvm):
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if self.is_running() and new_netvm is not None and not new_netvm.is_running():
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raise QubesException("Cannot dynamically attach to stopped NetVM")
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if self.netvm is not None:
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self.netvm.connected_vms.pop(self.qid)
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if self.is_running():
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self.detach_network()
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if hasattr(self.netvm, 'post_vm_net_detach'):
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self.netvm.post_vm_net_detach(self)
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if new_netvm is None:
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if not self._do_not_reset_firewall:
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# Set also firewall to block all traffic as discussed in #370
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if os.path.exists(self.firewall_conf):
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shutil.copy(self.firewall_conf, os.path.join(system_path["qubes_base_dir"],
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"backup", "%s-firewall-%s.xml" % (self.name,
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time.strftime('%Y-%m-%d-%H:%M:%S'))))
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self.write_firewall_conf({'allow': False, 'allowDns': False,
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'allowIcmp': False, 'allowYumProxy': False, 'rules': []})
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else:
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new_netvm.connected_vms[self.qid]=self
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self._netvm = new_netvm
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if new_netvm is None:
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return
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|
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if self.is_running():
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# refresh IP, DNS etc
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self.create_xenstore_entries(self.xid)
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self.attach_network()
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if hasattr(self.netvm, 'post_vm_net_attach'):
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self.netvm.post_vm_net_attach(self)
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|
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@property
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def ip(self):
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if self.netvm is not None:
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return self.netvm.get_ip_for_vm(self.qid)
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else:
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return None
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|
|
@property
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def netmask(self):
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if self.netvm is not None:
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return self.netvm.netmask
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else:
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return None
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|
|
@property
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def gateway(self):
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# This is gateway IP for _other_ VMs, so make sense only in NetVMs
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return None
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|
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@property
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def secondary_dns(self):
|
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if self.netvm is not None:
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return self.netvm.secondary_dns
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else:
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return None
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|
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@property
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def vif(self):
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if self.xid < 0:
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|
return None
|
|
if self.netvm is None:
|
|
return None
|
|
return "vif{0}.+".format(self.xid)
|
|
|
|
@property
|
|
def mac(self):
|
|
if self._mac is not None:
|
|
return self._mac
|
|
else:
|
|
return "00:16:3E:5E:6C:{qid:02X}".format(qid=self.qid)
|
|
|
|
@mac.setter
|
|
def mac(self, new_mac):
|
|
self._mac = new_mac
|
|
|
|
@property
|
|
def kernel(self):
|
|
return self._kernel
|
|
|
|
@kernel.setter
|
|
def kernel(self, new_value):
|
|
if new_value is not None:
|
|
if not os.path.exists(os.path.join(system_path[
|
|
'qubes_kernels_base_dir'], new_value)):
|
|
raise QubesException("Kernel '%s' not installed" % new_value)
|
|
for f in ('vmlinuz', 'modules.img'):
|
|
if not os.path.exists(os.path.join(
|
|
system_path['qubes_kernels_base_dir'], new_value, f)):
|
|
raise QubesException(
|
|
"Kernel '%s' not properly installed: missing %s "
|
|
"file" % (new_value, f))
|
|
self._kernel = new_value
|
|
|
|
@property
|
|
def updateable(self):
|
|
return self.template is None
|
|
|
|
# Leaved for compatibility
|
|
def is_updateable(self):
|
|
return self.updateable
|
|
|
|
@property
|
|
def default_user(self):
|
|
if self.template is not None:
|
|
return self.template.default_user
|
|
else:
|
|
return self._default_user
|
|
|
|
@default_user.setter
|
|
def default_user(self, value):
|
|
self._default_user = value
|
|
|
|
def is_networked(self):
|
|
if self.is_netvm():
|
|
return True
|
|
|
|
if self.netvm is not None:
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def verify_name(self, name):
|
|
if not isinstance(self.__basic_parse_xml_attr(name), str):
|
|
return False
|
|
if len(name) > 31:
|
|
return False
|
|
return re.match(r"^[a-zA-Z][a-zA-Z0-9_-]*$", name) is not None
|
|
|
|
def pre_rename(self, new_name):
|
|
# fire hooks
|
|
for hook in self.hooks_pre_rename:
|
|
hook(self, new_name)
|
|
|
|
def set_name(self, name):
|
|
if self.is_running():
|
|
raise QubesException("Cannot change name of running VM!")
|
|
|
|
if not self.verify_name(name):
|
|
raise QubesException("Invalid characters in VM name")
|
|
|
|
if self.installed_by_rpm:
|
|
raise QubesException("Cannot rename VM installed by RPM -- first clone VM and then use yum to remove package.")
|
|
|
|
self.pre_rename(name)
|
|
self.libvirt_domain.undefine()
|
|
self._libvirt_domain = None
|
|
self._qdb_connection.close()
|
|
self._qdb_connection = None
|
|
|
|
new_conf = os.path.join(self.dir_path, name + '.conf')
|
|
if os.path.exists(self.conf_file):
|
|
os.rename(self.conf_file, new_conf)
|
|
old_dirpath = self.dir_path
|
|
new_dirpath = os.path.join(os.path.dirname(self.dir_path), name)
|
|
os.rename(old_dirpath, new_dirpath)
|
|
self.dir_path = new_dirpath
|
|
old_name = self.name
|
|
self.name = name
|
|
if self.private_img is not None:
|
|
self.private_img = self.private_img.replace(old_dirpath, new_dirpath)
|
|
if self.root_img is not None:
|
|
self.root_img = self.root_img.replace(old_dirpath, new_dirpath)
|
|
if self.volatile_img is not None:
|
|
self.volatile_img = self.volatile_img.replace(old_dirpath, new_dirpath)
|
|
if self.conf_file is not None:
|
|
self.conf_file = new_conf.replace(old_dirpath, new_dirpath)
|
|
if self.icon_path is not None:
|
|
self.icon_path = self.icon_path.replace(old_dirpath, new_dirpath)
|
|
if hasattr(self, 'kernels_dir') and self.kernels_dir is not None:
|
|
self.kernels_dir = self.kernels_dir.replace(old_dirpath, new_dirpath)
|
|
|
|
self._update_libvirt_domain()
|
|
self.post_rename(old_name)
|
|
|
|
def post_rename(self, old_name):
|
|
# fire hooks
|
|
for hook in self.hooks_post_rename:
|
|
hook(self, old_name)
|
|
|
|
@property
|
|
def internal(self):
|
|
return self._internal
|
|
|
|
@internal.setter
|
|
def internal(self, value):
|
|
oldvalue = self._internal
|
|
self._internal = value
|
|
self.post_set_attr('internal', value, oldvalue)
|
|
|
|
@property
|
|
def autostart(self):
|
|
return self._autostart
|
|
|
|
@autostart.setter
|
|
def autostart(self, value):
|
|
if value:
|
|
retcode = subprocess.call(["sudo", "systemctl", "enable", "qubes-vm@%s.service" % self.name])
|
|
else:
|
|
retcode = subprocess.call(["sudo", "systemctl", "disable", "qubes-vm@%s.service" % self.name])
|
|
if retcode != 0:
|
|
raise QubesException("Failed to set autostart for VM via systemctl")
|
|
self._autostart = bool(value)
|
|
|
|
@classmethod
|
|
def is_template_compatible(cls, template):
|
|
"""Check if given VM can be a template for this VM"""
|
|
# FIXME: check if the value is instance of QubesTemplateVM, not the VM
|
|
# type. The problem is while this file is loaded, QubesTemplateVM is
|
|
# not defined yet.
|
|
if template and (not template.is_template() or template.type != "TemplateVM"):
|
|
return False
|
|
return True
|
|
|
|
@property
|
|
def template(self):
|
|
return self._template
|
|
|
|
@template.setter
|
|
def template(self, value):
|
|
if self._template is None and value is not None:
|
|
raise QubesException("Cannot set template for standalone VM")
|
|
if value and not self.is_template_compatible(value):
|
|
raise QubesException("Incompatible template type %s with VM of type %s" % (value.type, self.type))
|
|
self._template = value
|
|
|
|
def is_template(self):
|
|
return False
|
|
|
|
def is_appvm(self):
|
|
return False
|
|
|
|
def is_netvm(self):
|
|
return False
|
|
|
|
def is_proxyvm(self):
|
|
return False
|
|
|
|
def is_disposablevm(self):
|
|
return False
|
|
|
|
@property
|
|
def qdb(self):
|
|
if self._qdb_connection is None:
|
|
if self.is_running():
|
|
self._qdb_connection = QubesDB(self.name)
|
|
return self._qdb_connection
|
|
|
|
@property
|
|
def xid(self):
|
|
if self.libvirt_domain is None:
|
|
return -1
|
|
return self.libvirt_domain.ID()
|
|
|
|
def get_xid(self):
|
|
# obsoleted
|
|
return self.xid
|
|
|
|
def _update_libvirt_domain(self):
|
|
domain_config = self.create_config_file()
|
|
if self._libvirt_domain:
|
|
self._libvirt_domain.undefine()
|
|
self._libvirt_domain = vmm.libvirt_conn.defineXML(domain_config)
|
|
self.uuid = uuid.UUID(bytes=self._libvirt_domain.UUID())
|
|
|
|
@property
|
|
def libvirt_domain(self):
|
|
if self._libvirt_domain is not None:
|
|
return self._libvirt_domain
|
|
|
|
try:
|
|
if self.uuid is not None:
|
|
self._libvirt_domain = vmm.libvirt_conn.lookupByUUID(self.uuid.bytes)
|
|
else:
|
|
self._libvirt_domain = vmm.libvirt_conn.lookupByName(self.name)
|
|
self.uuid = uuid.UUID(bytes=self._libvirt_domain.UUID())
|
|
except libvirt.libvirtError:
|
|
if libvirt.virGetLastError()[0] == libvirt.VIR_ERR_NO_DOMAIN:
|
|
self._update_libvirt_domain()
|
|
else:
|
|
raise
|
|
return self._libvirt_domain
|
|
|
|
def get_uuid(self):
|
|
# obsoleted
|
|
return self.uuid
|
|
|
|
def get_mem(self):
|
|
if dry_run:
|
|
return 666
|
|
|
|
if not self.libvirt_domain.isActive():
|
|
return 0
|
|
return self.libvirt_domain.info()[1]
|
|
|
|
def get_mem_static_max(self):
|
|
if dry_run:
|
|
return 666
|
|
|
|
if self.libvirt_domain is None:
|
|
return 0
|
|
|
|
return self.libvirt_domain.maxMemory()
|
|
|
|
def get_prefmem(self):
|
|
# TODO: qmemman is still xen specific
|
|
untrusted_meminfo_key = xs.read('', '/local/domain/%s/memory/meminfo'
|
|
% self.xid)
|
|
if untrusted_meminfo_key is None or untrusted_meminfo_key == '':
|
|
return 0
|
|
domain = qmemman.DomainState(self.xid)
|
|
qmemman_algo.refresh_meminfo_for_domain(domain, untrusted_meminfo_key)
|
|
domain.memory_maximum = self.get_mem_static_max()*1024
|
|
return qmemman_algo.prefmem(domain)/1024
|
|
|
|
def get_per_cpu_time(self):
|
|
if dry_run:
|
|
import random
|
|
return random.random() * 100
|
|
|
|
libvirt_domain = self.libvirt_domain
|
|
if libvirt_domain and libvirt_domain.isActive():
|
|
return libvirt_domain.getCPUStats(
|
|
libvirt.VIR_NODE_CPU_STATS_ALL_CPUS, 0)[0]['cpu_time']/10**9
|
|
else:
|
|
return 0
|
|
|
|
def get_disk_utilization_root_img(self):
|
|
return qubes.qubesutils.get_disk_usage(self.root_img)
|
|
|
|
def get_root_img_sz(self):
|
|
if not os.path.exists(self.root_img):
|
|
return 0
|
|
|
|
return os.path.getsize(self.root_img)
|
|
|
|
def get_power_state(self):
|
|
if dry_run:
|
|
return "NA"
|
|
|
|
libvirt_domain = self.libvirt_domain
|
|
if libvirt_domain.isActive():
|
|
if libvirt_domain.state()[0] == libvirt.VIR_DOMAIN_PAUSED:
|
|
return "Paused"
|
|
elif libvirt_domain.state()[0] == libvirt.VIR_DOMAIN_CRASHED:
|
|
return "Crashed"
|
|
elif libvirt_domain.state()[0] == libvirt.VIR_DOMAIN_SHUTDOWN:
|
|
return "Halting"
|
|
elif libvirt_domain.state()[0] == libvirt.VIR_DOMAIN_SHUTOFF:
|
|
return "Dying"
|
|
elif libvirt_domain.state()[0] == libvirt.VIR_DOMAIN_PMSUSPENDED:
|
|
return "Suspended"
|
|
else:
|
|
if not self.is_fully_usable():
|
|
return "Transient"
|
|
else:
|
|
return "Running"
|
|
else:
|
|
return 'Halted'
|
|
|
|
return "NA"
|
|
|
|
def is_guid_running(self):
|
|
xid = self.xid
|
|
if xid < 0:
|
|
return False
|
|
if not os.path.exists('/var/run/qubes/guid-running.%d' % xid):
|
|
return False
|
|
return True
|
|
|
|
def is_qrexec_running(self):
|
|
if self.xid < 0:
|
|
return False
|
|
return os.path.exists('/var/run/qubes/qrexec.%s' % self.name)
|
|
|
|
def is_fully_usable(self):
|
|
# Running gui-daemon implies also VM running
|
|
if not self.is_guid_running():
|
|
return False
|
|
if not self.is_qrexec_running():
|
|
return False
|
|
return True
|
|
|
|
def is_running(self):
|
|
if self.libvirt_domain and self.libvirt_domain.isActive():
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def is_paused(self):
|
|
if self.libvirt_domain and self.libvirt_domain.state() == libvirt.VIR_DOMAIN_PAUSED:
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def get_start_time(self):
|
|
if not self.is_running():
|
|
return None
|
|
|
|
# TODO
|
|
uuid = self.uuid
|
|
|
|
start_time = vmm.xs.read('', "/vm/%s/start_time" % str(uuid))
|
|
if start_time != '':
|
|
return datetime.datetime.fromtimestamp(float(start_time))
|
|
else:
|
|
return None
|
|
|
|
def is_outdated(self):
|
|
# Makes sense only on VM based on template
|
|
if self.template is None:
|
|
return False
|
|
|
|
if not self.is_running():
|
|
return False
|
|
|
|
if not hasattr(self.template, 'rootcow_img'):
|
|
return False
|
|
|
|
rootimg_inode = os.stat(self.template.root_img)
|
|
try:
|
|
rootcow_inode = os.stat(self.template.rootcow_img)
|
|
except OSError:
|
|
# The only case when rootcow_img doesn't exists is in the middle of
|
|
# commit_changes, so VM is outdated right now
|
|
return True
|
|
|
|
current_dmdev = "/dev/mapper/snapshot-{0:x}:{1}-{2:x}:{3}".format(
|
|
rootimg_inode[2], rootimg_inode[1],
|
|
rootcow_inode[2], rootcow_inode[1])
|
|
|
|
# FIXME
|
|
# 51712 (0xCA00) is xvda
|
|
# backend node name not available through xenapi :(
|
|
used_dmdev = vmm.xs.read('', "/local/domain/0/backend/vbd/{0}/51712/node".format(self.xid))
|
|
|
|
return used_dmdev != current_dmdev
|
|
|
|
def get_disk_utilization(self):
|
|
return qubes.qubesutils.get_disk_usage(self.dir_path)
|
|
|
|
def get_disk_utilization_private_img(self):
|
|
return qubes.qubesutils.get_disk_usage(self.private_img)
|
|
|
|
def get_private_img_sz(self):
|
|
if not os.path.exists(self.private_img):
|
|
return 0
|
|
|
|
return os.path.getsize(self.private_img)
|
|
|
|
def resize_private_img(self, size):
|
|
assert size >= self.get_private_img_sz(), "Cannot shrink private.img"
|
|
|
|
f_private = open (self.private_img, "a+b")
|
|
f_private.truncate (size)
|
|
f_private.close ()
|
|
|
|
retcode = 0
|
|
if self.is_running():
|
|
# find loop device
|
|
p = subprocess.Popen (["sudo", "losetup", "--associated", self.private_img],
|
|
stdout=subprocess.PIPE)
|
|
result = p.communicate()
|
|
m = re.match(r"^(/dev/loop\d+):\s", result[0])
|
|
if m is None:
|
|
raise QubesException("ERROR: Cannot find loop device!")
|
|
|
|
loop_dev = m.group(1)
|
|
|
|
# resize loop device
|
|
subprocess.check_call(["sudo", "losetup", "--set-capacity", loop_dev])
|
|
|
|
retcode = self.run("while [ \"`blockdev --getsize64 /dev/xvdb`\" -lt {0} ]; do ".format(size) +
|
|
"head /dev/xvdb > /dev/null; sleep 0.2; done; resize2fs /dev/xvdb", user="root", wait=True)
|
|
if retcode != 0:
|
|
raise QubesException("resize2fs failed")
|
|
|
|
|
|
|
|
# FIXME: should be outside of QubesVM?
|
|
def get_timezone(self):
|
|
# fc18
|
|
if os.path.islink('/etc/localtime'):
|
|
return '/'.join(os.readlink('/etc/localtime').split('/')[-2:])
|
|
# <=fc17
|
|
elif os.path.exists('/etc/sysconfig/clock'):
|
|
clock_config = open('/etc/sysconfig/clock', "r")
|
|
clock_config_lines = clock_config.readlines()
|
|
clock_config.close()
|
|
zone_re = re.compile(r'^ZONE="(.*)"')
|
|
for line in clock_config_lines:
|
|
line_match = zone_re.match(line)
|
|
if line_match:
|
|
return line_match.group(1)
|
|
else:
|
|
# last resort way, some applications makes /etc/localtime
|
|
# hardlink instead of symlink...
|
|
tz_info = os.stat('/etc/localtime')
|
|
if not tz_info:
|
|
return None
|
|
if tz_info.st_nlink > 1:
|
|
p = subprocess.Popen(['find', '/usr/share/zoneinfo',
|
|
'-inum', str(tz_info.st_ino)],
|
|
stdout=subprocess.PIPE)
|
|
tz_path = p.communicate()[0].strip()
|
|
return tz_path.replace('/usr/share/zoneinfo/', '')
|
|
return None
|
|
|
|
def cleanup_vifs(self):
|
|
"""
|
|
Xend does not remove vif when backend domain is down, so we must do it
|
|
manually
|
|
"""
|
|
|
|
# FIXME: remove this?
|
|
if not self.is_running():
|
|
return
|
|
|
|
dev_basepath = '/local/domain/%d/device/vif' % self.xid
|
|
for dev in vmm.xs.ls('', dev_basepath):
|
|
# check if backend domain is alive
|
|
backend_xid = int(vmm.xs.read('', '%s/%s/backend-id' % (dev_basepath, dev)))
|
|
if backend_xid in vmm.libvirt_conn.listDomainsID():
|
|
# check if device is still active
|
|
if vmm.xs.read('', '%s/%s/state' % (dev_basepath, dev)) == '4':
|
|
continue
|
|
# remove dead device
|
|
vmm.xs.rm('', '%s/%s' % (dev_basepath, dev))
|
|
|
|
def create_xenstore_entries(self, xid = None):
|
|
if dry_run:
|
|
return
|
|
|
|
self.qdb.write("/name", self.name)
|
|
self.qdb.write("/qubes-vm-type", self.type)
|
|
self.qdb.write("/qubes-vm-updateable", str(self.updateable))
|
|
|
|
if self.is_netvm():
|
|
self.qdb.write("/qubes-netvm-gateway", self.gateway)
|
|
self.qdb.write("/qubes-netvm-secondary-dns", self.secondary_dns)
|
|
self.qdb.write("/qubes-netvm-netmask", self.netmask)
|
|
self.qdb.write("/qubes-netvm-network", self.network)
|
|
|
|
if self.netvm is not None:
|
|
self.qdb.write("/qubes-ip", self.ip)
|
|
self.qdb.write("/qubes-netmask", self.netvm.netmask)
|
|
self.qdb.write("/qubes-gateway", self.netvm.gateway)
|
|
self.qdb.write("/qubes-secondary-dns", self.netvm.secondary_dns)
|
|
|
|
tzname = self.get_timezone()
|
|
if tzname:
|
|
self.qdb.write("/qubes-timezone", tzname)
|
|
|
|
for srv in self.services.keys():
|
|
# convert True/False to "1"/"0"
|
|
self.qdb.write("/qubes-service/{0}".format(srv),
|
|
str(int(self.services[srv])))
|
|
|
|
self.qdb.write("/qubes-block-devices", '')
|
|
|
|
self.qdb.write("/qubes-usb-devices", '')
|
|
|
|
self.qdb.write("/qubes-debug-mode", str(int(self.debug)))
|
|
|
|
# Fix permissions
|
|
# TODO: Currently whole qmemman is quite Xen-specific, so stay with
|
|
# xenstore for it until decided otherwise
|
|
vmm.xs.set_permissions('', '/local/domain/{0}/memory'.format(self.xid),
|
|
[{ 'dom': xid }])
|
|
|
|
# fire hooks
|
|
for hook in self.hooks_create_xenstore_entries:
|
|
hook(self, xid=xid)
|
|
|
|
def _format_disk_dev(self, path, script, vdev, rw=True, type="disk", domain=None):
|
|
template = " <disk type='block' device='{type}'>\n" \
|
|
" <driver name='phy'/>\n" \
|
|
" <source dev='{path}'/>\n" \
|
|
" <target dev='{vdev}' bus='xen'/>\n" \
|
|
"{params}" \
|
|
" </disk>\n"
|
|
params = ""
|
|
if not rw:
|
|
params += " <readonly/>\n"
|
|
if domain:
|
|
params += " <domain name='%s'/>\n" % domain
|
|
if script:
|
|
params += " <script path='%s'/>\n" % script
|
|
return template.format(path=path, vdev=vdev, type=type,
|
|
params=params)
|
|
|
|
def _format_net_dev(self, ip, mac, backend):
|
|
template = " <interface type='ethernet'>\n" \
|
|
" <mac address='{mac}'/>\n" \
|
|
" <ip address='{ip}'/>\n" \
|
|
" <script path='vif-route-qubes'/>\n" \
|
|
" <domain name='{backend}'/>\n" \
|
|
" </interface>\n"
|
|
return template.format(ip=ip, mac=mac, backend=backend)
|
|
|
|
def _format_pci_dev(self, address):
|
|
template = " <hostdev type='pci' managed='yes'>\n" \
|
|
" <source>\n" \
|
|
" <address bus='0x{bus}' slot='0x{slot}' function='0x{fun}'/>\n" \
|
|
" </source>\n" \
|
|
" </hostdev>\n"
|
|
dev_match = re.match('([0-9a-f]+):([0-9a-f]+)\.([0-9a-f]+)', address)
|
|
if not dev_match:
|
|
raise QubesException("Invalid PCI device address: %s" % address)
|
|
return template.format(
|
|
bus=dev_match.group(1),
|
|
slot=dev_match.group(2),
|
|
fun=dev_match.group(3))
|
|
|
|
def get_rootdev(self):
|
|
if self.template:
|
|
return self._format_disk_dev(
|
|
"{dir}/root.img:{dir}/root-cow.img".format(
|
|
dir=self.template.dir_path),
|
|
"block-snapshot", "xvda", False)
|
|
else:
|
|
return self._format_disk_dev(
|
|
"{dir}/root.img".format(dir=self.dir_path),
|
|
None, "xvda", True)
|
|
|
|
def get_config_params(self):
|
|
args = {}
|
|
args['name'] = self.name
|
|
if hasattr(self, 'kernels_dir'):
|
|
args['kerneldir'] = self.kernels_dir
|
|
args['uuidnode'] = "<uuid>%s</uuid>" % str(self.uuid) if self.uuid else ""
|
|
args['vmdir'] = self.dir_path
|
|
args['pcidevs'] = ''.join(map(self._format_pci_dev, self.pcidevs))
|
|
args['mem'] = str(self.memory)
|
|
if self.maxmem < self.memory:
|
|
args['mem'] = str(self.maxmem)
|
|
args['maxmem'] = str(self.maxmem)
|
|
if 'meminfo-writer' in self.services and not self.services['meminfo-writer']:
|
|
# If dynamic memory management disabled, set maxmem=mem
|
|
args['maxmem'] = args['mem']
|
|
args['vcpus'] = str(self.vcpus)
|
|
if self.netvm is not None:
|
|
args['ip'] = self.ip
|
|
args['mac'] = self.mac
|
|
args['gateway'] = self.netvm.gateway
|
|
args['dns1'] = self.netvm.gateway
|
|
args['dns2'] = self.secondary_dns
|
|
args['netmask'] = self.netmask
|
|
args['netdev'] = self._format_net_dev(self.ip, self.mac, self.netvm.name)
|
|
args['disable_network1'] = '';
|
|
args['disable_network2'] = '';
|
|
else:
|
|
args['ip'] = ''
|
|
args['mac'] = ''
|
|
args['gateway'] = ''
|
|
args['dns1'] = ''
|
|
args['dns2'] = ''
|
|
args['netmask'] = ''
|
|
args['netdev'] = ''
|
|
args['disable_network1'] = '<!--';
|
|
args['disable_network2'] = '-->';
|
|
args['rootdev'] = self.get_rootdev()
|
|
args['privatedev'] = \
|
|
self._format_disk_dev("{dir}/private.img".format(dir=self.dir_path),
|
|
None, "xvdb", True)
|
|
args['volatiledev'] = \
|
|
self._format_disk_dev("{dir}/volatile.img".format(dir=self.dir_path),
|
|
None, "xvdc", True)
|
|
if hasattr(self, 'kernel'):
|
|
args['otherdevs'] = \
|
|
self._format_disk_dev("{dir}/modules.img".format(dir=self.kernels_dir),
|
|
None, "xvdd", self.kernel is None)
|
|
if hasattr(self, 'kernelopts'):
|
|
args['kernelopts'] = self.kernelopts
|
|
if self.debug:
|
|
print >> sys.stderr, "--> Debug mode: adding 'earlyprintk=xen' to kernel opts"
|
|
args['kernelopts'] += ' earlyprintk=xen'
|
|
|
|
# fire hooks
|
|
for hook in self.hooks_get_config_params:
|
|
args = hook(self, args)
|
|
|
|
return args
|
|
|
|
@property
|
|
def uses_custom_config(self):
|
|
return self.conf_file != self.absolute_path(self.name + ".conf", None)
|
|
|
|
def create_config_file(self, file_path = None, prepare_dvm = False):
|
|
if file_path is None:
|
|
file_path = self.conf_file
|
|
if self.uses_custom_config:
|
|
conf_appvm = open(file_path, "r")
|
|
domain_config = conf_appvm.read()
|
|
conf_appvm.close()
|
|
return domain_config
|
|
|
|
f_conf_template = open(self.config_file_template, 'r')
|
|
conf_template = f_conf_template.read()
|
|
f_conf_template.close()
|
|
|
|
template_params = self.get_config_params()
|
|
if prepare_dvm:
|
|
template_params['name'] = '%NAME%'
|
|
template_params['privatedev'] = ''
|
|
template_params['netdev'] = re.sub(r"address='[0-9.]*'", "address='%IP%'", template_params['netdev'])
|
|
domain_config = conf_template.format(**template_params)
|
|
|
|
# FIXME: This is only for debugging purposes
|
|
old_umask = os.umask(002)
|
|
try:
|
|
conf_appvm = open(file_path, "w")
|
|
conf_appvm.write(domain_config)
|
|
conf_appvm.close()
|
|
except:
|
|
# Ignore errors
|
|
pass
|
|
finally:
|
|
os.umask(old_umask)
|
|
|
|
return domain_config
|
|
|
|
def create_on_disk(self, verbose=False, source_template = None):
|
|
if source_template is None:
|
|
source_template = self.template
|
|
assert source_template is not None
|
|
|
|
if dry_run:
|
|
return
|
|
|
|
old_umask = os.umask(002)
|
|
if verbose:
|
|
print >> sys.stderr, "--> Creating directory: {0}".format(self.dir_path)
|
|
os.mkdir (self.dir_path)
|
|
|
|
if verbose:
|
|
print >> sys.stderr, "--> Creating the VM config file: {0}".format(self.conf_file)
|
|
|
|
template_priv = source_template.private_img
|
|
if verbose:
|
|
print >> sys.stderr, "--> Copying the template's private image: {0}".\
|
|
format(template_priv)
|
|
|
|
# We prefer to use Linux's cp, because it nicely handles sparse files
|
|
retcode = subprocess.call (["cp", template_priv, self.private_img])
|
|
if retcode != 0:
|
|
raise IOError ("Error while copying {0} to {1}".\
|
|
format(template_priv, self.private_img))
|
|
|
|
if self.updateable:
|
|
template_root = source_template.root_img
|
|
if verbose:
|
|
print >> sys.stderr, "--> Copying the template's root image: {0}".\
|
|
format(template_root)
|
|
|
|
# We prefer to use Linux's cp, because it nicely handles sparse files
|
|
retcode = subprocess.call (["cp", template_root, self.root_img])
|
|
if retcode != 0:
|
|
raise IOError ("Error while copying {0} to {1}".\
|
|
format(template_root, self.root_img))
|
|
|
|
kernels_dir = source_template.kernels_dir
|
|
if verbose:
|
|
print >> sys.stderr, "--> Copying the kernel (set kernel \"none\" to use it): {0}".\
|
|
format(kernels_dir)
|
|
|
|
os.mkdir (self.dir_path + '/kernels')
|
|
for f in ("vmlinuz", "initramfs", "modules.img"):
|
|
shutil.copy(os.path.join(kernels_dir, f),
|
|
os.path.join(self.dir_path, vm_files["kernels_subdir"], f))
|
|
|
|
# Create volatile.img
|
|
self.reset_volatile_storage(source_template = source_template, verbose=verbose)
|
|
|
|
if verbose:
|
|
print >> sys.stderr, "--> Creating icon symlink: {0} -> {1}".format(self.icon_path, self.label.icon_path)
|
|
os.symlink (self.label.icon_path, self.icon_path)
|
|
|
|
os.umask(old_umask)
|
|
|
|
# fire hooks
|
|
for hook in self.hooks_create_on_disk:
|
|
hook(self, verbose, source_template=source_template)
|
|
|
|
def get_clone_attrs(self):
|
|
attrs = ['kernel', 'uses_default_kernel', 'netvm', 'uses_default_netvm', \
|
|
'memory', 'maxmem', 'kernelopts', 'uses_default_kernelopts', 'services', 'vcpus', \
|
|
'_mac', 'pcidevs', 'include_in_backups', '_label', 'default_user']
|
|
|
|
# fire hooks
|
|
for hook in self.hooks_get_clone_attrs:
|
|
attrs = hook(self, attrs)
|
|
|
|
return attrs
|
|
|
|
def clone_attrs(self, src_vm, fail_on_error=True):
|
|
self._do_not_reset_firewall = True
|
|
for prop in self.get_clone_attrs():
|
|
try:
|
|
setattr(self, prop, getattr(src_vm, prop))
|
|
except Exception as e:
|
|
if fail_on_error:
|
|
self._do_not_reset_firewall = False
|
|
raise
|
|
else:
|
|
print >>sys.stderr, "WARNING: %s" % str(e)
|
|
self._do_not_reset_firewall = False
|
|
|
|
def clone_disk_files(self, src_vm, verbose):
|
|
if dry_run:
|
|
return
|
|
|
|
if src_vm.is_running():
|
|
raise QubesException("Attempt to clone a running VM!")
|
|
|
|
if verbose:
|
|
print >> sys.stderr, "--> Creating directory: {0}".format(self.dir_path)
|
|
os.mkdir (self.dir_path)
|
|
|
|
if src_vm.private_img is not None and self.private_img is not None:
|
|
if verbose:
|
|
print >> sys.stderr, "--> Copying the private image:\n{0} ==>\n{1}".\
|
|
format(src_vm.private_img, self.private_img)
|
|
# We prefer to use Linux's cp, because it nicely handles sparse files
|
|
retcode = subprocess.call (["cp", src_vm.private_img, self.private_img])
|
|
if retcode != 0:
|
|
raise IOError ("Error while copying {0} to {1}".\
|
|
format(src_vm.private_img, self.private_img))
|
|
|
|
if src_vm.updateable and src_vm.root_img is not None and self.root_img is not None:
|
|
if verbose:
|
|
print >> sys.stderr, "--> Copying the root image:\n{0} ==>\n{1}".\
|
|
format(src_vm.root_img, self.root_img)
|
|
# We prefer to use Linux's cp, because it nicely handles sparse files
|
|
retcode = subprocess.call (["cp", src_vm.root_img, self.root_img])
|
|
if retcode != 0:
|
|
raise IOError ("Error while copying {0} to {1}".\
|
|
format(src_vm.root_img, self.root_img))
|
|
|
|
if src_vm.icon_path is not None and self.icon_path is not None:
|
|
if os.path.exists (src_vm.dir_path):
|
|
if os.path.islink(src_vm.icon_path):
|
|
icon_path = os.readlink(src_vm.icon_path)
|
|
if verbose:
|
|
print >> sys.stderr, "--> Creating icon symlink: {0} -> {1}".format(self.icon_path, icon_path)
|
|
os.symlink (icon_path, self.icon_path)
|
|
else:
|
|
if verbose:
|
|
print >> sys.stderr, "--> Copying icon: {0} -> {1}".format(src_vm.icon_path, self.icon_path)
|
|
shutil.copy(src_vm.icon_path, self.icon_path)
|
|
|
|
# fire hooks
|
|
for hook in self.hooks_clone_disk_files:
|
|
hook(self, src_vm, verbose)
|
|
|
|
def verify_files(self):
|
|
if dry_run:
|
|
return
|
|
|
|
if not os.path.exists (self.dir_path):
|
|
raise QubesException (
|
|
"VM directory doesn't exist: {0}".\
|
|
format(self.dir_path))
|
|
|
|
if self.updateable and not os.path.exists (self.root_img):
|
|
raise QubesException (
|
|
"VM root image file doesn't exist: {0}".\
|
|
format(self.root_img))
|
|
|
|
if not os.path.exists (self.private_img):
|
|
raise QubesException (
|
|
"VM private image file doesn't exist: {0}".\
|
|
format(self.private_img))
|
|
|
|
if not os.path.exists (os.path.join(self.kernels_dir, 'vmlinuz')):
|
|
raise QubesException (
|
|
"VM kernel does not exists: {0}".\
|
|
format(os.path.join(self.kernels_dir, 'vmlinuz')))
|
|
|
|
if not os.path.exists (os.path.join(self.kernels_dir, 'initramfs')):
|
|
raise QubesException (
|
|
"VM initramfs does not exists: {0}".\
|
|
format(os.path.join(self.kernels_dir, 'initramfs')))
|
|
|
|
if not os.path.exists (os.path.join(self.kernels_dir, 'modules.img')):
|
|
raise QubesException (
|
|
"VM kernel modules image does not exists: {0}".\
|
|
format(os.path.join(self.kernels_dir, 'modules.img')))
|
|
|
|
# fire hooks
|
|
for hook in self.hooks_verify_files:
|
|
hook(self)
|
|
|
|
return True
|
|
|
|
def reset_volatile_storage(self, source_template = None, verbose = False):
|
|
assert not self.is_running(), "Attempt to clean volatile image of running VM!"
|
|
|
|
if source_template is None:
|
|
source_template = self.template
|
|
|
|
# Only makes sense on template based VM
|
|
if source_template is None:
|
|
# For StandaloneVM create it only if not already exists (eg after backup-restore)
|
|
if not os.path.exists(self.volatile_img):
|
|
if verbose:
|
|
print >> sys.stderr, "--> Creating volatile image: {0}...".format (self.volatile_img)
|
|
f_root = open (self.root_img, "r")
|
|
f_root.seek(0, os.SEEK_END)
|
|
root_size = f_root.tell()
|
|
f_root.close()
|
|
subprocess.check_call([system_path["prepare_volatile_img_cmd"], self.volatile_img, str(root_size / 1024 / 1024)])
|
|
return
|
|
|
|
if verbose:
|
|
print >> sys.stderr, "--> Cleaning volatile image: {0}...".format (self.volatile_img)
|
|
if dry_run:
|
|
return
|
|
if os.path.exists (self.volatile_img):
|
|
os.remove (self.volatile_img)
|
|
|
|
if hasattr(source_template, 'clean_volatile_img'):
|
|
retcode = subprocess.call (["tar", "xf", source_template.clean_volatile_img, "-C", self.dir_path])
|
|
if retcode != 0:
|
|
raise IOError ("Error while unpacking {0} to {1}".\
|
|
format(source_template.clean_volatile_img, self.volatile_img))
|
|
|
|
def remove_from_disk(self):
|
|
if dry_run:
|
|
return
|
|
|
|
# fire hooks
|
|
for hook in self.hooks_remove_from_disk:
|
|
hook(self)
|
|
|
|
shutil.rmtree (self.dir_path)
|
|
|
|
def write_firewall_conf(self, conf):
|
|
defaults = self.get_firewall_conf()
|
|
expiring_rules_present = False
|
|
for item in defaults.keys():
|
|
if item not in conf:
|
|
conf[item] = defaults[item]
|
|
|
|
root = lxml.etree.Element(
|
|
"QubesFirewallRules",
|
|
policy = "allow" if conf["allow"] else "deny",
|
|
dns = "allow" if conf["allowDns"] else "deny",
|
|
icmp = "allow" if conf["allowIcmp"] else "deny",
|
|
yumProxy = "allow" if conf["allowYumProxy"] else "deny"
|
|
)
|
|
|
|
for rule in conf["rules"]:
|
|
# For backward compatibility
|
|
if "proto" not in rule:
|
|
if rule["portBegin"] is not None and rule["portBegin"] > 0:
|
|
rule["proto"] = "tcp"
|
|
else:
|
|
rule["proto"] = "any"
|
|
element = lxml.etree.Element(
|
|
"rule",
|
|
address=rule["address"],
|
|
proto=str(rule["proto"]),
|
|
)
|
|
if rule["netmask"] is not None and rule["netmask"] != 32:
|
|
element.set("netmask", str(rule["netmask"]))
|
|
if rule.get("portBegin", None) is not None and \
|
|
rule["portBegin"] > 0:
|
|
element.set("port", str(rule["portBegin"]))
|
|
if rule.get("portEnd", None) is not None and rule["portEnd"] > 0:
|
|
element.set("toport", str(rule["portEnd"]))
|
|
if "expire" in rule:
|
|
element.set("expire", str(rule["expire"]))
|
|
expiring_rules_present = True
|
|
|
|
root.append(element)
|
|
|
|
tree = lxml.etree.ElementTree(root)
|
|
|
|
try:
|
|
old_umask = os.umask(002)
|
|
with open(self.firewall_conf, 'w') as f:
|
|
fcntl.lockf(f, fcntl.LOCK_EX)
|
|
tree.write(f, encoding="UTF-8", pretty_print=True)
|
|
fcntl.lockf(f, fcntl.LOCK_UN)
|
|
f.close()
|
|
os.umask(old_umask)
|
|
except EnvironmentError as err:
|
|
print >> sys.stderr, "{0}: save error: {1}".format(
|
|
os.path.basename(sys.argv[0]), err)
|
|
return False
|
|
|
|
# Automatically enable/disable 'yum-proxy-setup' service based on allowYumProxy
|
|
if conf['allowYumProxy']:
|
|
self.services['yum-proxy-setup'] = True
|
|
else:
|
|
if self.services.has_key('yum-proxy-setup'):
|
|
self.services.pop('yum-proxy-setup')
|
|
|
|
if expiring_rules_present:
|
|
subprocess.call(["sudo", "systemctl", "start",
|
|
"qubes-reload-firewall@%s.timer" % self.name])
|
|
|
|
return True
|
|
|
|
def has_firewall(self):
|
|
return os.path.exists (self.firewall_conf)
|
|
|
|
def get_firewall_defaults(self):
|
|
return { "rules": list(), "allow": True, "allowDns": True, "allowIcmp": True, "allowYumProxy": False }
|
|
|
|
def get_firewall_conf(self):
|
|
conf = self.get_firewall_defaults()
|
|
|
|
try:
|
|
tree = lxml.etree.parse(self.firewall_conf)
|
|
root = tree.getroot()
|
|
|
|
conf["allow"] = (root.get("policy") == "allow")
|
|
conf["allowDns"] = (root.get("dns") == "allow")
|
|
conf["allowIcmp"] = (root.get("icmp") == "allow")
|
|
conf["allowYumProxy"] = (root.get("yumProxy") == "allow")
|
|
|
|
for element in root:
|
|
rule = {}
|
|
attr_list = ("address", "netmask", "proto", "port", "toport",
|
|
"expire")
|
|
|
|
for attribute in attr_list:
|
|
rule[attribute] = element.get(attribute)
|
|
|
|
if rule["netmask"] is not None:
|
|
rule["netmask"] = int(rule["netmask"])
|
|
else:
|
|
rule["netmask"] = 32
|
|
|
|
if rule["port"] is not None:
|
|
rule["portBegin"] = int(rule["port"])
|
|
else:
|
|
# backward compatibility
|
|
rule["portBegin"] = 0
|
|
|
|
# For backward compatibility
|
|
if rule["proto"] is None:
|
|
if rule["portBegin"] > 0:
|
|
rule["proto"] = "tcp"
|
|
else:
|
|
rule["proto"] = "any"
|
|
|
|
if rule["toport"] is not None:
|
|
rule["portEnd"] = int(rule["toport"])
|
|
else:
|
|
rule["portEnd"] = None
|
|
|
|
if rule["expire"] is not None:
|
|
rule["expire"] = int(rule["expire"])
|
|
if rule["expire"] <= int(datetime.datetime.now().strftime(
|
|
"%s")):
|
|
continue
|
|
else:
|
|
del(rule["expire"])
|
|
|
|
del(rule["port"])
|
|
del(rule["toport"])
|
|
|
|
conf["rules"].append(rule)
|
|
|
|
except EnvironmentError as err:
|
|
return conf
|
|
except (xml.parsers.expat.ExpatError,
|
|
ValueError, LookupError) as err:
|
|
print("{0}: load error: {1}".format(
|
|
os.path.basename(sys.argv[0]), err))
|
|
return None
|
|
|
|
return conf
|
|
|
|
def pci_add(self, pci):
|
|
if not os.path.exists('/sys/bus/pci/devices/0000:%s' % pci):
|
|
raise QubesException("Invalid PCI device: %s" % pci)
|
|
if self.pcidevs.count(pci):
|
|
# already added
|
|
return
|
|
self.pcidevs.append(pci)
|
|
if self.is_running():
|
|
try:
|
|
subprocess.check_call(['sudo', system_path["qubes_pciback_cmd"], pci])
|
|
subprocess.check_call(['sudo', 'xl', 'pci-attach', str(self.xid), pci])
|
|
except Exception as e:
|
|
print >>sys.stderr, "Failed to attach PCI device on the fly " \
|
|
"(%s), changes will be seen after VM restart" % str(e)
|
|
|
|
def pci_remove(self, pci):
|
|
if not self.pcidevs.count(pci):
|
|
# not attached
|
|
return
|
|
self.pcidevs.remove(pci)
|
|
if self.is_running():
|
|
p = subprocess.Popen(['xl', 'pci-list', str(self.xid)],
|
|
stdout=subprocess.PIPE)
|
|
result = p.communicate()
|
|
m = re.search(r"^(\d+.\d+)\s+0000:%s$" % pci, result[0], flags=re.MULTILINE)
|
|
if not m:
|
|
print >>sys.stderr, "Device %s already detached" % pci
|
|
return
|
|
vmdev = m.group(1)
|
|
try:
|
|
self.run_service("qubes.DetachPciDevice",
|
|
user="root", input="00:%s" % vmdev)
|
|
subprocess.check_call(['sudo', 'xl', 'pci-detach', str(self.xid), pci])
|
|
except Exception as e:
|
|
print >>sys.stderr, "Failed to detach PCI device on the fly " \
|
|
"(%s), changes will be seen after VM restart" % str(e)
|
|
|
|
def run(self, command, user = None, verbose = True, autostart = False,
|
|
notify_function = None,
|
|
passio = False, passio_popen = False, passio_stderr=False,
|
|
ignore_stderr=False, localcmd = None, wait = False, gui = True,
|
|
filter_esc = False):
|
|
"""command should be in form 'cmdline'
|
|
When passio_popen=True, popen object with stdout connected to pipe.
|
|
When additionally passio_stderr=True, stderr also is connected to pipe.
|
|
When ignore_stderr=True, stderr is connected to /dev/null.
|
|
"""
|
|
|
|
if user is None:
|
|
user = self.default_user
|
|
null = None
|
|
if not self.is_running() and not self.is_paused():
|
|
if not autostart:
|
|
raise QubesException("VM not running")
|
|
|
|
try:
|
|
if notify_function is not None:
|
|
notify_function ("info", "Starting the '{0}' VM...".format(self.name))
|
|
elif verbose:
|
|
print >> sys.stderr, "Starting the VM '{0}'...".format(self.name)
|
|
self.start(verbose=verbose, start_guid = gui, notify_function=notify_function)
|
|
|
|
except (IOError, OSError, QubesException) as err:
|
|
raise QubesException("Error while starting the '{0}' VM: {1}".format(self.name, err))
|
|
except (MemoryError) as err:
|
|
raise QubesException("Not enough memory to start '{0}' VM! "
|
|
"Close one or more running VMs and try "
|
|
"again.".format(self.name))
|
|
|
|
if self.is_paused():
|
|
raise QubesException("VM is paused")
|
|
if not self.is_qrexec_running():
|
|
raise QubesException(
|
|
"Domain '{}': qrexec not connected.".format(self.name))
|
|
|
|
if gui and os.getenv("DISPLAY") is not None and not self.is_guid_running():
|
|
self.start_guid(verbose = verbose, notify_function = notify_function)
|
|
|
|
args = [system_path["qrexec_client_path"], "-d", str(self.xid), "%s:%s" % (user, command)]
|
|
if localcmd is not None:
|
|
args += [ "-l", localcmd]
|
|
if filter_esc:
|
|
args += ["-t"]
|
|
if os.isatty(sys.stderr.fileno()):
|
|
args += ["-T"]
|
|
if passio:
|
|
os.execv(system_path["qrexec_client_path"], args)
|
|
exit(1)
|
|
|
|
call_kwargs = {}
|
|
if ignore_stderr:
|
|
null = open("/dev/null", "w")
|
|
call_kwargs['stderr'] = null
|
|
|
|
if passio_popen:
|
|
popen_kwargs={'stdout': subprocess.PIPE}
|
|
popen_kwargs['stdin'] = subprocess.PIPE
|
|
if passio_stderr:
|
|
popen_kwargs['stderr'] = subprocess.PIPE
|
|
else:
|
|
popen_kwargs['stderr'] = call_kwargs.get('stderr', None)
|
|
p = subprocess.Popen (args, **popen_kwargs)
|
|
if null:
|
|
null.close()
|
|
return p
|
|
if not wait:
|
|
args += ["-e"]
|
|
retcode = subprocess.call(args, **call_kwargs)
|
|
if null:
|
|
null.close()
|
|
return retcode
|
|
|
|
def run_service(self, service, source="dom0", user=None,
|
|
passio_popen = False, input=None):
|
|
if input and passio_popen:
|
|
raise ValueError("'input' and 'passio_popen' cannot be used "
|
|
"together")
|
|
if input:
|
|
return self.run("QUBESRPC %s %s" % (service, source),
|
|
localcmd="echo %s" % input, user=user, wait=True)
|
|
else:
|
|
return self.run("QUBESRPC %s %s" % (service, source),
|
|
passio_popen=passio_popen, user=user, wait=True)
|
|
|
|
def attach_network(self, verbose = False, wait = True, netvm = None):
|
|
if dry_run:
|
|
return
|
|
|
|
if not self.is_running():
|
|
raise QubesException ("VM not running!")
|
|
|
|
if netvm is None:
|
|
netvm = self.netvm
|
|
|
|
if netvm is None:
|
|
raise QubesException ("NetVM not set!")
|
|
|
|
if netvm.qid != 0:
|
|
if not netvm.is_running():
|
|
if verbose:
|
|
print >> sys.stderr, "--> Starting NetVM {0}...".format(netvm.name)
|
|
netvm.start()
|
|
|
|
self.libvirt_domain.attachDevice(
|
|
self._format_net_dev(self.ip, self.mac, self.netvm.name))
|
|
|
|
def detach_network(self, verbose = False, netvm = None):
|
|
if dry_run:
|
|
return
|
|
|
|
if not self.is_running():
|
|
raise QubesException ("VM not running!")
|
|
|
|
if netvm is None:
|
|
netvm = self.netvm
|
|
|
|
if netvm is None:
|
|
raise QubesException ("NetVM not set!")
|
|
|
|
self.libvirt_domain.detachDevice( self._format_net_dev(self.ip,
|
|
self.mac, self.netvm.name))
|
|
|
|
def wait_for_session(self, notify_function = None):
|
|
#self.run('echo $$ >> /tmp/qubes-session-waiter; [ ! -f /tmp/qubes-session-env ] && exec sleep 365d', ignore_stderr=True, gui=False, wait=True)
|
|
|
|
# Note : User root is redefined to SYSTEM in the Windows agent code
|
|
p = self.run('QUBESRPC qubes.WaitForSession none', user="root", passio_popen=True, gui=False, wait=True)
|
|
p.communicate(input=self.default_user)
|
|
|
|
def start_guid(self, verbose = True, notify_function = None,
|
|
extra_guid_args=[], before_qrexec=False):
|
|
if verbose:
|
|
print >> sys.stderr, "--> Starting Qubes GUId..."
|
|
|
|
guid_cmd = [system_path["qubes_guid_path"],
|
|
"-d", str(xid), "-N", self.name,
|
|
"-c", self.label.color,
|
|
"-i", self.label.icon_path,
|
|
"-l", str(self.label.index)]
|
|
guid_cmd += extra_guid_args
|
|
if self.debug:
|
|
guid_cmd += ['-v', '-v']
|
|
elif not verbose:
|
|
guid_cmd += ['-q']
|
|
retcode = subprocess.call (guid_cmd)
|
|
if (retcode != 0) :
|
|
raise QubesException("Cannot start qubes-guid!")
|
|
|
|
if verbose:
|
|
print >> sys.stderr, "--> Sending monitor layout..."
|
|
|
|
try:
|
|
subprocess.call([system_path["monitor_layout_notify_cmd"], self.name])
|
|
except Exception as e:
|
|
print >>sys.stderr, "ERROR: %s" % e
|
|
|
|
if verbose:
|
|
print >> sys.stderr, "--> Waiting for qubes-session..."
|
|
|
|
self.wait_for_session(notify_function)
|
|
|
|
def start_qrexec_daemon(self, verbose = False, notify_function = None):
|
|
if verbose:
|
|
print >> sys.stderr, "--> Starting the qrexec daemon..."
|
|
qrexec_args = [str(self.xid), self.name, self.default_user]
|
|
if not verbose:
|
|
qrexec_args.insert(0, "-q")
|
|
qrexec_env = os.environ
|
|
qrexec_env['QREXEC_STARTUP_TIMEOUT'] = str(self.qrexec_timeout)
|
|
retcode = subprocess.call ([system_path["qrexec_daemon_path"]] +
|
|
qrexec_args, env=qrexec_env)
|
|
if (retcode != 0) :
|
|
raise OSError ("Cannot execute qrexec-daemon!")
|
|
|
|
def start_qubesdb(self):
|
|
retcode = subprocess.call ([
|
|
system_path["qubesdb_daemon_path"],
|
|
str(self.xid),
|
|
self.name])
|
|
if retcode != 0:
|
|
self.force_shutdown()
|
|
raise OSError("ERROR: Cannot execute qubesdb-daemon!")
|
|
|
|
def start(self, verbose = False, preparing_dvm = False, start_guid = True,
|
|
notify_function = None, mem_required = None):
|
|
if dry_run:
|
|
return
|
|
|
|
# Intentionally not used is_running(): eliminate also "Paused", "Crashed", "Halting"
|
|
if self.get_power_state() != "Halted":
|
|
raise QubesException ("VM is already running!")
|
|
|
|
self.verify_files()
|
|
|
|
if self.netvm is not None:
|
|
if self.netvm.qid != 0:
|
|
if not self.netvm.is_running():
|
|
if verbose:
|
|
print >> sys.stderr, "--> Starting NetVM {0}...".format(self.netvm.name)
|
|
self.netvm.start(verbose = verbose, start_guid = start_guid, notify_function = notify_function)
|
|
|
|
self.reset_volatile_storage(verbose=verbose)
|
|
if verbose:
|
|
print >> sys.stderr, "--> Loading the VM (type = {0})...".format(self.type)
|
|
|
|
self._update_libvirt_domain()
|
|
|
|
if mem_required is None:
|
|
mem_required = int(self.memory) * 1024 * 1024
|
|
qmemman_client = QMemmanClient()
|
|
try:
|
|
got_memory = qmemman_client.request_memory(mem_required)
|
|
except IOError as e:
|
|
raise IOError("ERROR: Failed to connect to qmemman: %s" % str(e))
|
|
if not got_memory:
|
|
qmemman_client.close()
|
|
raise MemoryError ("ERROR: insufficient memory to start VM '%s'" % self.name)
|
|
|
|
# Bind pci devices to pciback driver
|
|
for pci in self.pcidevs:
|
|
nd = vmm.libvirt_conn.nodeDeviceLookupByName('pci_0000_' + pci.replace(':','_').replace('.','_'))
|
|
nd.dettach()
|
|
|
|
self.libvirt_domain.createWithFlags(libvirt.VIR_DOMAIN_START_PAUSED)
|
|
|
|
if verbose:
|
|
print >> sys.stderr, "--> Starting Qubes DB..."
|
|
self.start_qubesdb()
|
|
|
|
xid = self.xid
|
|
|
|
if preparing_dvm:
|
|
self.services['qubes-dvm'] = True
|
|
if verbose:
|
|
print >> sys.stderr, "--> Setting Qubes DB info for the VM..."
|
|
self.create_xenstore_entries(xid)
|
|
|
|
qvm_collection = QubesVmCollection()
|
|
qvm_collection.lock_db_for_reading()
|
|
qvm_collection.load()
|
|
qvm_collection.unlock_db()
|
|
|
|
if verbose:
|
|
print >> sys.stderr, "--> Updating firewall rules..."
|
|
for vm in qvm_collection.values():
|
|
if vm.is_proxyvm() and vm.is_running():
|
|
vm.write_iptables_xenstore_entry()
|
|
|
|
# fire hooks
|
|
for hook in self.hooks_start:
|
|
hook(self, verbose = verbose, preparing_dvm = preparing_dvm,
|
|
start_guid = start_guid, notify_function = notify_function)
|
|
|
|
if verbose:
|
|
print >> sys.stderr, "--> Starting the VM..."
|
|
self.libvirt_domain.resume()
|
|
|
|
# close() is not really needed, because the descriptor is close-on-exec
|
|
# anyway, the reason to postpone close() is that possibly xl is not done
|
|
# constructing the domain after its main process exits
|
|
# so we close() when we know the domain is up
|
|
# the successful unpause is some indicator of it
|
|
qmemman_client.close()
|
|
|
|
if self._start_guid_first and start_guid and not preparing_dvm and os.path.exists('/var/run/shm.id'):
|
|
self.start_guid(verbose=verbose, notify_function=notify_function, before_qrexec=True)
|
|
|
|
if not preparing_dvm:
|
|
self.start_qrexec_daemon(verbose=verbose,notify_function=notify_function)
|
|
|
|
if start_guid and not preparing_dvm and os.path.exists('/var/run/shm.id'):
|
|
self.start_guid(verbose=verbose, notify_function=notify_function)
|
|
|
|
return xid
|
|
|
|
def _cleanup_zombie_domains(self):
|
|
"""
|
|
This function is workaround broken libxl (which leaves not fully
|
|
created domain on failure) and vchan on domain crash behaviour
|
|
@return: None
|
|
"""
|
|
xc = self.get_xc_dominfo()
|
|
if xc and xc['dying'] == 1:
|
|
# GUID still running?
|
|
guid_pidfile = '/var/run/qubes/guid-running.%d' % xc['domid']
|
|
if os.path.exists(guid_pidfile):
|
|
guid_pid = open(guid_pidfile).read().strip()
|
|
os.kill(int(guid_pid), 15)
|
|
# qrexec still running?
|
|
if self.is_qrexec_running():
|
|
#TODO: kill qrexec daemon
|
|
pass
|
|
|
|
def shutdown(self, force=False, xid = None):
|
|
if dry_run:
|
|
return
|
|
|
|
if not self.is_running():
|
|
raise QubesException ("VM already stopped!")
|
|
|
|
self.libvirt_domain.shutdown()
|
|
|
|
def force_shutdown(self, xid = None):
|
|
if dry_run:
|
|
return
|
|
|
|
if not self.is_running() and not self.is_paused():
|
|
raise QubesException ("VM already stopped!")
|
|
|
|
self.libvirt_domain.destroy()
|
|
|
|
def suspend(self):
|
|
# TODO!!!
|
|
if dry_run:
|
|
return
|
|
|
|
if not self.is_running() and not self.is_paused():
|
|
raise QubesException ("VM already stopped!")
|
|
|
|
if len (self.pcidevs) > 0:
|
|
raise NotImplementedError
|
|
else:
|
|
self.pause()
|
|
|
|
def resume(self):
|
|
# TODO!!!
|
|
if dry_run:
|
|
return
|
|
|
|
if self.get_power_state() == "Suspended":
|
|
raise NotImplementedError
|
|
else:
|
|
self.unpause()
|
|
|
|
def pause(self):
|
|
if dry_run:
|
|
return
|
|
|
|
self.libvirt_domain.suspend()
|
|
|
|
def unpause(self):
|
|
if dry_run:
|
|
return
|
|
|
|
self.libvirt_domain.resume()
|
|
|
|
def get_xml_attrs(self):
|
|
attrs = {}
|
|
attrs_config = self.get_attrs_config()
|
|
for attr in attrs_config:
|
|
attr_config = attrs_config[attr]
|
|
if 'save' in attr_config:
|
|
if 'save_skip' in attr_config:
|
|
if callable(attr_config['save_skip']):
|
|
if attr_config['save_skip']():
|
|
continue
|
|
elif eval(attr_config['save_skip']):
|
|
continue
|
|
if callable(attr_config['save']):
|
|
value = attr_config['save']()
|
|
else:
|
|
value = eval(attr_config['save'])
|
|
if 'save_attr' in attr_config:
|
|
attrs[attr_config['save_attr']] = value
|
|
else:
|
|
attrs[attr] = value
|
|
return attrs
|
|
|
|
def create_xml_element(self):
|
|
|
|
attrs = self.get_xml_attrs()
|
|
element = lxml.etree.Element(
|
|
# Compatibility hack (Qubes*VM in type vs Qubes*Vm in XML)...
|
|
"Qubes" + self.type.replace("VM", "Vm"),
|
|
**attrs)
|
|
return element
|
|
|
|
register_qubes_vm_class(QubesVm)
|